Accumulator

• US 4,597,351 A
• Filed: 06/24/1983
• Issued: 07/01/1986
• Est. Priority Date: 08/17/1981
• Status: Expired due to Fees

• Current Assignee: Endeoco Corporation
• Original Assignee: Endeco-Environmental Devices Corporation
• Inventors: Brainard, Edward C. II
• Primary Examiner(s): Blix, Trygve M.
• Assistant Examiner(s): BARTZ, CLIFFORD T
• Application Number:
  US06/507,946
• Time in Patent Office: 1,103 Days
• Field of Search: 267/74, 267/73, 267/69, 114/230, 114/293, 441/21, 441/23
• US Class Current: 267/74
• CPC Class Codes: B63B 2021/005 Resilient passive elements to be placed in line with mooring or towing chains, or line connections, e.g. dampers or springs
• CPC Class Codes: B63B 34/60 Arrangements for towing, e.g. for use with water-skis or wakeboards

Abstract

An accumulator particularly adapted for mooring instruments in an ocean environment. The accumulator includes a solid rubber core surrounded by a nylon overbraid. The nylon overbraid is seized by means of high tensile strength tape to the rubber core at intervals along its length. The ends of the accumulator are terminated in loops surrounding steel thimbles. The loops are formed by standard braid splicing techniques. The accumulator is capable of elongation to three times its relaxed length and has an ultimate breaking strength in excess of 15,000 lbs.

Claims

1. Accumulator comprising:

an extensible, resilient core element having a relaxed state and a stretched state;

a braided covering comprising strands of relatively inextensible material having a high tensile strength loosely surrounding said core element in its relaxed state and coming into tension only when said core element is in its stretched state; and

means for seizing said covering to said core element at a plurality of intervals intermediate the seizing at the ends along the length of said core element, whereby said braided covering will carry the full load applied to said accumulator when it is in its stretched state.

2. The accumulator of claim 1 wherein said core element is a rubber material.

3. The accumulator of claim 1 wherein said strands of said relatively inextensible material are nylon.

4. The accumulator of claim 1 wherein said seizing means comprises high tensile strength tape.

5. The accumulator of claim 1 wherein said covering is seized to said core element when it is in its stretched state.

6. The accumulator of claim 1 wherein said stretched state is approximately three times as long as said relaxed state.

7. The accumulator of claim 2 wherein said rubber material is one solid piece.

8. The accumulator of claim 2 wherein said rubber material comprises a plurality of strands.

9. The accumulator of claim 4 wherein said tape is glass reinforced.

10. Accumulator comprising:

an extensible and resilient solid rubber core element having a relaxed state and a stretched state;

a braided covering comprising strands of high tensile strength nylon loosely surrounding said rubber core element in its relaxed state and coming into tension only when said rubber core element is in its stretched state; and

high tensile strength, glass reinforced tape adapted for seizing said covering to said rubber element at a plurality of intervals intermediate the seizing at the ends along the length of said rubber element, whereby said braided covering will carry the full load applied to said accumulator when it is in its stretched state.